P3A.2 A sample consisting of 0.10 mol of perfect gas molecules is held by a piston inside a cylinder such that the volume is 1.25 dm'; the external pressure is constant at 1.00 bar and the temperature is maintained at 300 Kby a thermostat. The piston is released so that the gas can expand. Calculate (a) the volume of the gas when the expansion is complete; (b) the work done when the gas expands; (c) the heat absorbed by the system. Hence calculate ASor

Q: When a sample of fructose (C6H12O6) weighing 0.2715 g was burned in a bomb calorimeter, the…

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Q: The standard enthalpy change of combustion [to CO2(g) and H20(€)] at 25°C of the organic liquid…

A: The combustion reaction can be given as: The given information is: According to the standard…

Q: In a computer model of the atmosphere. 20 kJ of energy was transferred as heat to a parcel (a…

A: The reactions in which the energy in the form of heat is absorbed are named as endothermic reaction…

Q: The combustion of 1.00 mol of glucose (C6H12O6) liberates 2820 kJ of heat. If 1.13 g of glucose is…

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Q: Calculate the work done by a gas consisting of 2.0 mol of molecules when it expands reversibly and…

A: Change in a system when temperature is constant is called isothermal process. A process which is…

Q: Suppose that the molar enthalpy of a reaction is 19.68 kJ/mol and 26 grams of X (MW = 19.66)…

A: Molar enthalpy of reaction is a term used in chemical thermodynamics. Molar enthalpy of reaction is…

Q: A system undergoes a process in which ∆E = -250 J while gaining 93 J of heat energy and undergoing…

A: Given,  ∆E or du = -250 J dq = 93 J Pressure, P = 2.5 atm Formula Used, According to first law of…

Q: The standard heat of combustion of liquid cyclopentane, C5H10(l),C5H10(l), was measured to be…

A: The difference between the enthalpy of the products and reactants is known as enthalpy of the…

Q: The molar heat capacity of a sample of gas at constant-pressure varies with temperature according to…

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Q: Calculate the work (in J) associated with the expansion of a gas from 44ml to 63 ml at a constant…

A: Initial volume of gas= Vi = 44 ml = 44 * 10-3L Final volume of gas = Vf = 63 ml = 63 * 10-3L…

Q: When 1.535 g of methanol (CH3OH) was burned in a constant-volume bomb calorimeter, the water…

A: Introduction The heat released can be calculated by applying the following formula: q = mc∆T

Q: The molar mass of enthalpy of combustion of glucose, C6H12O6 is -2803 kJ. A mass of 1.00 g glucose…

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Q: What will be the molar heat capacity at constant pressure of the gas when 229 J of energy is…

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Q: Calculate AH and AUf for the formation of silane, SiH4(g), from its elements at 298 K, if 250 cm³ of…

A: Calorimeter is a device used for measuring heat change in a chemical reaction. Constant volume…

Q: Calculate the final temperature and the change in enthalpy when 1.15 kJ of energy is transferred as…

A: The heat transferred at constant pressure (qp) is equal to the change in enthalpy (ΔH) of the…

Q: It is often useful to be able to anticipate, without doing a detailed calculation, whether an…

A: The standard enthalpy in terms of internal energy can be expressed as follows:

Q: The standard enthalpy change of combustion [to CO,(g) and H,O(€)] at 25°C of the organic liquid…

A: Given information: Enthalpy change for combustion of liquid cyclohexane = -3731.7 kJ/mol

Q: Calculate the internal energy (in J) of a sample of 5.6 mol of an ideal monoatomic gas at 185°C.

A: The internal energy of an ideal gas is the sum total of all the translational, rotational and…

Q: Calculate the final temperature and the change in enthalpy when 765 J of energy is transferred as…

A: The solution is given below:

Q: 4. a) What is the enthalpy change for a system undergoing a volume change of 500.0 mL to 25.0mL…

A: Given that -  Volume change of a system, ∆V = Vfinal - Vinitial =  25 - 500 = -475 Pressure ,P = 435…

Q: What is the internal energy (in J) of 5.50 mol of an ideal monatomic gas at 201°C? J

A: Given: Monoatomic gas number of moles, n = 5.50 moles Temperature, T = 201°C = 474.15K

Q: When 178.0 J of energy is supplied as heat to 1.90 mol of gas molecules, the temperature of the…

A: Heat = 178.0 J Moles = 1.90 mole  ∆T = 1.78 K

Q: 50.0 mL of 1.00 M HCl(aq) and 100.0 mL of 1.00 M NaOH(aq), both at 25.0oC, are added together in a…

A: Total volume of the solution, (V) = (50 + 100) mL = 150 mL. The density of the solution, d = 1 g/mL.…

Q: Here you are invited to explore the implications of the temperature dependence of the heat capacity…

A: The equation for the molar heat capacity at constant pressure in terms of derivatives is as follows:

Q: The standard heat of combustion of liquid methyl cyclopentane, C6H12(l),C6H12(l), was measured to be…

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Q: Ethanol, C2H5OH, is brought to the boil at 1 atm. When an electric current of 0.682 A from a 12.0 V…

A: We are given that the pressure at the ethanol boiling point is 1 atm, and current = 0.682 A, voltage…

Q: Enthalpy of Chemical Reactions As stated earlier, the change in internal energy is related to the…

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Q: The enthalpy changes accompanying the dissociation of successive bonds in NH3(g) are 460, 390, and…

A: The reaction for the dissociation of NH3 is: Calculation of mean enthalpy of the N-H bonds:

Q: Lec7 heat capacities H.W) When 178 J of energy is supplied as heat to 1.9 mol of gas molecules at…

A: Given that -  Energy or heat supplied = 178 J  Number of moles of gas Molecules = 1.9  Change in…

Q: 7) The enthalpy of the following reaction at 1.00 atm and 298.15K is -56.9kJmol-1 H* (aq) + OH (aq)…

A: In order to find the enthalpy of the hydrolysis per mole of the ATP we first write down the given…

Q: Calculate the enthalpy change in 24g of nitrogen if it is heated from 300K to 1500K at constant…

A: If the volume is constant, the process is isochoric. The enthalpy change for isochoric process is…

Q: An instrument consisting of electric motor and a battery produced 25 kJ of work and lost 10 kJ as…

A: Since the relationship between ΔU, q and w is given as ΔU = q + w  where ΔU = change in internal…

Q: The complete combustion of 1.200 g of cinnamaldehyde (C9H8O), in a bomb calorimeter (Cbc = 3.640…

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Q: 2.8 A sample of the sugar D-ribose (C;H1,05) of mass 0.727 g was placed in a calorimeter and then…

A: The energy of combustion and enthalpy of formation of D-ribose is calculated below:

Q: A sample of 39.44 mg of liquid phenyl acetylene, C6H5CCH (mol. wt. = 102.14 g/mol) is burned in pure…

A: The balanced chemical equation for burning of liquid phenyl acetylene is:…

Q: Given the heat capacities at constant pressure, Cp, in J/(K mole) for the substances A, B, and C as…

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Q: Calculate the enthalpy for the reaction of nitrogen dioxide gas with liquid water to make aqueous…

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Q: What is the standard enthalpy of formation of the decomposition of one mole of liquid sulfuric acid…

A: Balanced chemical equation for decomposition of Sulfuric acid: 2H2SO4(l) → 2H2O(g) + O2(g) + 2SO2(g)…

Q: The combustion of 1.00 mol of glucose (C6H1206) liberates 2820 kJ of heat. If 1.13 g of glucose is…

A: Moles of glucose are, Moles = mass ÷ molar mass Moles = 1.13 g ÷ 180 g/mol Moles = 0.0063 mol   Heat…

Q: What is the relationship between internal energy (ΔU), andenthalpy (ΔH) for an endothermic process…

A: The relationship between internal energy (ΔU) andenthalpy (ΔH) for an endothermic process is to be…

Q: How much work is done in blowing up a balloon from zero volume to a volume of 2.2 L, assuming that p…

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Q: The molar heat capacity at constant pressure for CO(g) is 6.97 cal mol-1 K-1. How much heat in cal…

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Q: Calculate the standard enthalpy of combustion of liquid benzene from the standard enthalpies of…

A: The reaction of combustion of benzene is given as 2C6H6+15O2→12CO2+6H2O The enthalpy of reaction is…

Q: What is the change in (a) the molar internal energy, and (b) the molar enthalpy of a sample of argon…

A: For Ar (Monoatomic), γ = 1.667  Then Cp = γR/R-1                 =1.667× 8.314/8.314-1        Here…

Q: Given that the standard enthalpy of formation of HI(aq) is −55 kJ mol−1, what is the value of…

A: Given that: Standard enthalpy of formation of HI = -55 KJ mol-1 ∆fH° I-,aq= ? The reaction will be,…

Q: When 229 J of energy is supplied as heat to 3.00 mol Ar(g), the temperature of the sample increases…

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Q: Consider

A: New Reaction equation is : 3A + 3/2B ------> 3C  Then, it's energy also multiple by 3/2 fector…

Q: In a generic chemical reaction involving reactants A and B and products C and D, aA + 6B>cC+ dD, the…

A: Consider the given balanced equation is as follows; CO g    +    NH3 g    →    HCN g    +    H2O g…

Q: If 54.0 g argon at 400 K is compressed isothermally and reversibly from a pressure of 1.50 to 4.00…

A: The change in energy and enthalpy has to be given, It is an isothermal process and  the work done…

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.